Ubuntu Installation :: Configuring RAID, LVM, PV On 10.04
Jul 17, 2010
configuring RAID, LVM and my physical volumes for a new 10.04 Server install (used mostly as a windows file server and print server). My hardware setup consists of 2 identical 500GB hard drives. My desired end state is:
An ext4 root partition (20 GB)
A swap partition (2GB)
A fat32 partition (450 GB) (to be accessed via Samba)
The above all to be on RAID1 across the 2 disks
The way I see it, the there are a number of possible ways to configure the above, and I am looking for some advice on the best (feasible) option: Create a single MD0 raid volume accross the entire two disks, and then create a single LVG across this, with 3 sepreate LVs, on for each partition above Create 2 physical volumes on each disk, create two raid volume on these (MD0, MD1), one for the LVG with two LVs for the Root and swap, a the other for the FAT32 partition (this seems like more work?) Other more suitable options?
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Dec 27, 2010
i am setting up a raid 1 on a netbook with the 30gb internal ssd as the primary drive and the 32gb sd card as the mirror. i am following the instructions here...
[URL]
i have several working raid 1 arrays under my belt using usb sticks and want to try something more advanced and practical now.i have configured the internal ssd with no trouble, however, the 32gb sd card is not showing up in the installer. so i cannot configure it as the mirror. my 2gb sd cards show up when i run the installer why doesn't the 32gb sd card? if i boot into a session the primary ssd the 32gb card does show up mounted on the desktop. it shown as a dos partition.
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Jan 23, 2010
So I am a Microsoft ASP.NET developer during the day, but I've been growing fond of linux and had ubuntu at home until my computer exploded one day. True story, and it sucked.
I have rebuilt my computer and just got 3 drives today. I'm hoping RAID5 with mdadm will perform well enough to keep me happy.
I know it is possible to configure linux installations to save docs and stuff to a separate partition, but I don't actually know how, let alone with RAID5.
I am very fond of the idea of being able to wipe and install various distros of linux while maintaining all my docs and/or config settings (??).
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Dec 2, 2010
Alright, I have this issue on both SystemRescueCD and Debian Squeeze. I have an ASUS P5Q Turbo board that supports hardware RAID. If I configure an array and then start the Linux installer or boot the rescue CD, I get /dev/sda and /dev/sdb instead of an array. What gives? I need to start installing within the hour so I am desperate for an answer!
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Nov 26, 2009
I am using Centos 5.4 on an Intel DG451D Main Board. Two SATA drives in RAID1 mode via the main board's built in AHCI controller. It seems to work just fine but I would like to be able to monitor the state of my drives and controller, especially during a re-build and make configuration changes etc if possible, so new drives can be added etc from within the OS. Is there a way to do this within Centos or am I stuck with using just the BIOS configuration system? Apologies if this is a stupid question - I am pretty new to this and have spent several hours trying to find a solution to my question but to no avail.
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Nov 26, 2010
I have installed Ubuntu on my m1530 since 8.04 and currently dual boot Win7 and 10.10. I would like to dual boot on my PC, but I have run into a problem. I am not a pro at Ubuntu, but this problem I can not solve by reading forums like I have in the past.
I realize this is a common problem, but I have noticed people having success.
I have a M4A87TD EVO MB with two Seagate drives in Raid 0. (The raid controller is a SB850 on that MB) I use the raid utility to create the raid drive that Windows7x64 uses. I have 2 partitions and 1 unused space. Partition 1 is Windows, partition 2 is for media, and the remaining unused space is for Ubuntu.
I am running ubuntu-10.10-desktop-amd64 off a Cruzer 16GB flash drive that was installed via Universal-USB-Installer-1.8.1.4.
My problem like so many others is that when I load into Ubuntu, gparted detects two separate hard drives instead of the raid. I read that this is because kpartx is not installed on 10.10. I then went in LiveCD mode and downloaded kpartx from Synaptic Manager. Gparted still reported two drives. I opened terminal and run a few commands with kpartx. I received an error. (Forgive me I didn't write it down, but I believe it said something about a communication error. I will try again later and see.)
Currently I am reflashing the Cruzer with a persistence of 4GB. I am not familiar with this process, but I understand that my LiveCD boot will save information I download to it. I decided to try this method because I was going to install kpartx and reboot to see if this made a difference.
I am looking for any suggestions on a different method or perhaps someone to tell me that the raid controller or some hardware isn't supported. I did install ubuntu-10.10-alternate-amd64 on my flash drive, but fail to get past detecting my CD-ROM drive since it's not plugged in. If this method is viable, I will plug it in. I also watched the ..... video were a guy creates Raid 0 with the alternated CD, but it wasn't a dual boot and didn't use a raid controller from a MB.
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Jan 16, 2010
I have a problem configuring a RAID server under Ubuntu 9.10 (kernel 2.6.31.17) with mdadm (v2.6.7.1). First I had some hardware issues that finally got solved by using another motherboard. Now I am dealing with the software part.In order to ease things, I am trying to configure a RAID 5 with three partitions in one disk. I have two HD's, one IDE where the OS lies (recognized as sda), and another where I intend to build the RAID (recognized as sdb). In this second drive I have made three partitions (sdb1, sdb2 & sdb3) of the same size.I've already re-installed Ubuntu 9.10 a couple of times, zeroed the superblocks of the partitions, repartitioned the disks with different partition sizes (I am using 5 GB partitions to save time). I've gone through this process several times, and I really don't know how to move forward now. If RAID is about trust and reliability, this is exactly what I'm not able to get.
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Feb 1, 2011
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
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Sep 15, 2010
It's been a real battle, but I am getting close.I won't go into all the details of the fight that I have had, but I've almost made it to the finish line. Here is the set up. ASUS Z8PE-D18 mother board 2 CPU, 8 Gig Ram. I recently added an OCZ Agility SSD, defined a raid 1 virtual disk on the 1 terabyte WD HDD drives, which will holds all of my user data, the SSD is for executables.The bios is set to AHCI. Windows 7 installed fine, recognizes the raid VD just fine.
I installed Ubuntu 10.04 by first booting into try and mode, then opening a terminal and issuing a "sudo dmraid -ay" command. Then performing the install. I told it to install the raid components, and told it to let me specify the partitions manually. When setting up the partitions, I told it to use the free space I set aside on the SSD from the Windows 7 install as ext4 and to mount root there. Ubuntu installed just fine, grub2 comes up just fine, and Windows 7 boots with out a hitch, recognizing the mirrored partition as I indicated previously. When I tell grub to boot linux however, it pauses and I get the "no block devices found" message. It will then boot, but it does not recognize the raid array. After Ubuntu starts up I can run "dmraid -ay" and it recognizes the raid array, but shows the two component disks of the raid array as well. It will not allow the component disks to be mounted, but they show up which is annoying. (I can live with that if I have to)
I have fixed a similar problem before by setting up a dmraid script in /etc/initramfs-tools/scripts/local-top ... following the instructions found at the bottom of this blog:[URL].. To recap: My problem is that after grub2 fires up Ubuntu 10.04.1 LTS (Lucid Lynx), it pauses, and I get "no block devices found" It then boots but does not recognize the raid array untill I manually run "dmraid -ay". I've hunted around for what to do but I have not found anything. It may be some timing issue or something, but I am so tired of beating my head against this wall.
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May 20, 2011
If I were to have a situation where I had installed the driver for a printer but when I went into printing on the control panel to "add" the printer the driver didn't show up - could I or should I consider manually editing some configuration file to get the printer recognized/ installed on the machine? If that were a good solution, how would I do it? What file would I look for? What would I edit in it? I know that first sentence is probably hard to read but I don't know how else to say it.
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Jan 20, 2010
I have an Ubuntu 9.10 server that is normally headless, but has a TV-Out that I want to start using. I've installed xorg, but when I test it with either startx or just X, I get the following:
Code:
X: warning; process set to priority -2 instead of requested priority 0
X.Org X Server 1.6.0
Release Date: 2009-2-25
X Protocol Version 11, Revision 0
[Code].....
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Jul 15, 2011
I've been trying for an hour now to try and configuremy e0mail with 'Evolution' and it's just not happeningI have a LIVE accountemailhere@LIVE.CO.UKAnd I know the incoming and outgoing address's I believeI have on both a SLL Encryption.P.s This forum has been the BEST assistance with my problems since I have gotten Ubuntu
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Feb 16, 2010
When I upgraded my system for the first time, I got a message asking me to decide between a few menu items for configuring grub-pc. When I chose to keep the current version installed, GRUB booted to a CLI. What menu item should I choose?
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Aug 9, 2010
I have installed Unbuntu 10.4 Cloud Server. I have two servers:
Front End Server (clound-fe):
2 Dual Core 32 bit Xeon processors (They do not support Virtualization)
2 Ethernet Ports
[code]....
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Aug 14, 2010
I'm installing Ubuntu 10.4 DTE on an Acer netbook. The netbook came with Microsoft Windows installed and I'm adding Ubuntu via wubi on a USB thumb drive.
I'm almost done and it is configuring grub-pc. The last line is: Setting up grub-pc (2.98-lubuntu7) ... Then it hangs.
On the web, I find numerous bug reports about my situation, but no work arounds. What do I do?
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Aug 23, 2010
I'm about to sell an old computer and I want to put a fresh copy of Ubuntu on it for the buyer to use. I don't want to configure a user name and password--I want to leave that process to the buyer, similar to the experience of (for example) buying a new Apple computer, where it asks for a user name and password on first boot after the OS is already installed.
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May 18, 2011
I can not perform the upgrade. Installing upgrades hangs at configuring libc6 xscreensaver and xlockmore must be restarted before upgrading One or more running instances of xscreensaver or xscreensaver have been detected on this system. Because of incompatible library changes, the upgrade of the GNU libc library will leave you unable to authenticate to these programs. You should arrange for these programs to be restarted or stopped before continuing this upgrade, to avoid locking your users out of their current sessions. I've stopped xscreensaver it is the only session running. I will reboot and stop xscreensaver and then run the upgrade.
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Jul 1, 2010
I have some free space (not partitioned) on my disk drive. I have not configured LVM during installation.Is it possible to modify some of the existing partitions to be a member of LVM?
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Jul 9, 2011
I wanted to install ubuntu 11.04 alongside win7 on my notebook (with no optical drive). I created 2 primary partitions (one for win7 [ntfs] one for ubuntu [ext4]) and 2 logical partitions (one for swap one for general use for storage[ntfs]) by running ubuntu from my USB Flash disk and using gparted. First, I installed win7 without having any problem, then ubuntu also without having any (apparent) problem (I installed boot loader on MBR: the default setting). After the ubuntu installation is over, I was instructed to restart my computer as usual and win7 started without asking me which OS to boot. When I run ubuntu from my Flash disk and run gparted and selected the boot drive as the partition on which ubuntu was installed, I got the error saying "missing operating system". I suppose GRUB is misconfigured and that is causing the problem because nothing went wrong during the installation processes. How to configure GRUB by running ubuntu from my Flash disk. BTW win7 is working just fine.
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Sep 17, 2015
I recently started installing Debian and I want to download and install a GUI in it. For that I could use my university Wi-Fi connection. I was told that it's a WPA2 secured connection. But when I tried to configure it, it keeps asking me for a "passphrase". I don't have a passphrase! All I have is my username and password for the Wi-Fi. What should I enter as my passphrase ? I tried both username and password and neither of them worked.
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Mar 18, 2010
I didn't get any responses to my question yesterday about grub with multiple disks
By "best," I don't mean with the most technical detail about each and every option. Instead, I'm looking for a guide that provides a step-by-step instructions about how to do some of the more common tasks, e.g.: configuring grub to work with MS Windows 7 and XP how to reinstall the MBR with grub after MS Windows' install program overwrites the MBR reinstalling the MBR from Fedora's LiveCD (without going through the whole install process) because I can't boot to my hard drive. configuring grub to work with multiple OS on separate hard drives
Again, I'm looking for a guide that starts with the basics about how to create a configuration file and write it to the MBR.
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Jul 31, 2011
I installed the Centos 5.5 on a WM instance. Run out of space after doing the updates. It is very difficult to keep re-partitioning /
I tried to install a new instance but it doesn't let me configure the disc and it just goes and install the OS.
How can I use the good old installation options etc?
What happened to control? This became a control nightmare.
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Feb 4, 2010
I've read through tutorials on xrg.conf and xrandr but I have a hard time sorting it all out.I have two questions:You have installed a distro and you're looking at a desktop, but its off center on the monitor and its in low graphics mode, and possibly the wrong refresh rate. [ I've been in this situation with multiple distros, but lets use Ubuntu for the example.]1) How do you determine the actual current resolution?2) What are the steps -in order- to configure the (single) (desktop computer) display?
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Sep 13, 2010
I've just finished booting my system via Live CD, and installing 10.04-1 to existing partitions on a hardware RAID. The install went fine but when I rebooted I didn't get past the BIOS output screens.I used four existing partitions for the install: /home (MyRAID3, which was kept as-is), / (MyRAID2, which was reformatted) , /boot (MyRAID1, also reformatted) and swap.
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Jul 18, 2011
I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.
Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.
I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.
I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.
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Jun 29, 2011
migrate an installed Ubuntu system from a software raid to a hardware raid on the same machine? how would you go about doing so?
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May 9, 2010
First of all here's my PC configuration
Proc Core2Duo 6750
MB MSI P35 Neo 2
RAM Corsair 4GB
Video Gigabyte GTS250
HDD 2x320GB Seagate in RAID 0 and 1GB WD
I have a Windows 7 installation with a boot partition on the RAID. I also want to have a dual boot with openSUSE 11.2 but I don't know how to set correctly my partitions. I have some unallocated space next to the Windows C: partition. When I try to install openSUSE it makes a suggestion to create some partitions that i don't need and don't want, and even doesn't mount them. It also creates a / 80GB, /boot 36MB, swap 2GB and /home 20GB partitions, so I am in lack of free space.
I don't know how to create screenshots during installation. Maybe I'll try to reinstall later and pick some screens in english, because my system language is bulgarian.
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Apr 5, 2011
Is this possible? I was able to do this with Debian 6 no problem. The installation interface is really nice but seems to be lacking any way to do more advanced configurations. Is there some boot option I can pass in?
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Mar 22, 2011
How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
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Aug 3, 2010
I am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.
The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).
I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.
Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.
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